Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 466 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
2. 2.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic chess set
3. 3.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a balloon
5. 5.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
7. 7.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.True or false: a magnetic chess set works by air pressure. (a) True (b) False
9. 9.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a balloon (d) a magnet
13. 13.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
16. 16.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
17. 17.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
18. 18.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a medicine dropper (d) a suction hook
22. 22.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a compass needle (d) a suction hook
23. 23.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a magnetic pin holder (d) a drinking straw
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) whether the card stays (b) how full the glass is (c) the way we turn it (d) the same glass
27. 27.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a drinking straw (d) a compass needle
28. 28.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a medicine dropper
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the way we turn it (b) whether the card stays (c) how full the glass is
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a battery cell (d) a towel
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) yeast (d) a magnet
33. 33.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) True (b) False
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a magnet (d) a stiff postcard
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
37. 37.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) turmeric powder (d) a towel
40. 40.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a compass needle (d) a magnetic chess set

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